Cleared check engine light by battery disconnect now locked out

Discussion in 'Prius v Technical Discussion' started by steppin, Aug 2, 2025 at 1:18 AM.

  1. steppin

    steppin New Member

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    I replaced water pump and then removed negative battery cable to clear the code.. now all my warning lights all stay lit up on the dash and it won’t let me place car into drive or reverse.. I have tried reset this several times by same procedure with no luck.. I know I must of re set all defaults and lost communication with computer. Now I can’t even move the car.. how do I get this all synced again?
     
    #1 steppin, Aug 2, 2025 at 1:18 AM
  2. bisco

    bisco cookie crumbler

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    i think you are going to have to scan for trouble codes to find out why it is complaining
     
    #2 bisco, Aug 2, 2025 at 9:26 PM
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  3. ChapmanF

    ChapmanF Senior Member

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    i think what bisco thinks
     
    #3 ChapmanF, Aug 2, 2025 at 9:35 PM
  4. steppin

    steppin New Member

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    It had a code .. is why I had to replace water pump
     
    #4 steppin, Aug 2, 2025 at 10:21 PM
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  5. bisco

    bisco cookie crumbler

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    if you have trouble lights, you have more codes. could be related to the pump or the install.
    use tech stream or autel
     
    #5 bisco, Aug 3, 2025 at 2:10 PM
  6. steppin

    steppin New Member

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    Not more codes .. just everything on instrument panel is all lit up and I can’t get into drive or reverse.. it locks me out
     
    #6 steppin, Aug 3, 2025 at 3:33 PM
  7. bisco

    bisco cookie crumbler

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    load test the 12 volt, and check the connections, especially negative to ground.
     
    #7 bisco, Aug 4, 2025 at 2:53 PM
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  8. BiomedO1

    BiomedO1 Senior Member

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    Are you getting the green 'ready' lamp? It doesn't seem reasonable that you don't have any more codes and yet the car won't go into gear. Why would the ECU lock you out if everything is READY????????
    Use a better OBD2 scanner....
     
    #8 BiomedO1, Aug 4, 2025 at 3:01 PM
  9. Air_Boss

    Air_Boss Senior Member

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    Did you remove and replace the HV interlock when doing the water pump service?
     
    #9 Air_Boss, Aug 4, 2025 at 5:34 PM
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